During the course of an amicable divorce, this respectful and honest goodbye letter can be given to a spouse.
Dear {Recipient},
I know this is a difficult time for both of us, so I'll keep this brief. I just wanted to say how happy I am that we were able to work out an agreement that we both find satisfying. Divorce is, of course, a sad event. I think that we've made the best out of this difficult situation.
Do you remember when we {happy memory}? I look forward to the days when we can laugh about our past as friends. I know we'll need some time apart to set our lives up, but I really believe that we'll be able to remain friends even in the face of this divorce.
I also wanted to mention how much I appreciate that you {sensitive gesture} during these proceedings. I feel like even though we no longer love one another, we can still care for one another. I'm glad you feel the same way.
Please know I still do care about you very much, and I look forward to seeing you soon.
Best wishes,
{Sender}